package jdbc;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;

public class Demo3 {
    public static void main(String[] args) throws Exception {
        Class.forName("com.mysql.cj.jdbc.Driver");
        Connection connection= DriverManager.getConnection("jdbc:mysql://localhost:3306/tedu?characterEncoding=utf8&useSSL=false&serverTimezone=Asia/Shanghai&rewriteBatchedStatements=true","root","root");
        System.out.println("与数据库建立连接!");
        Statement statement=connection.createStatement();
        String sql="UPDATE user1\n" +
                "         SET nickname='老三',password='666666',age=33\n" +
                "         WHERE id=1";
        int num=statement.executeUpdate(sql);
        if(num>0){
            System.out.println("修改成功");
        }else{
            System.out.println("修改失败");
        }
        connection.close();
    }
}
